Ubuntu 20.04 LAN Adapter Connects But Fails Ping

I am trying to get the LAN to work on Ubuntu 20.04. It used to work about a month ago, when I quickly checked.

At present, when I connect the cable it shows an icon in the tray as if the connection is established. However, whenever I ping anything, I get the following:

(base) ➜  ~  ping 8.8.8.8
ping: connect: Network is unreachable

What's more, whenever I plug the cable in, the connection in the tray shows up almost immediately. It used to take a few moments. Hence, something seems off.

Here is some pertinent information:

(base) ➜  ~  sudo lspci -nnk
08:00.0 Ethernet controller [0200]: Intel Corporation I211 Gigabit Network Connection [8086:1539] (rev 03)
    Subsystem: ASRock Incorporation I211 Gigabit Network Connection [1849:1539]
    Kernel driver in use: igb
    Kernel modules: igb

And more

(base) ➜  ~  sudo lshw -C network
  *-network
       description: Ethernet interface
       product: I211 Gigabit Network Connection
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:08:00.0
       logical name: enp8s0
       version: 03
       serial: a8:a1:59:57:05:22
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi msix pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=igb driverversion=5.15.0+ duplex=full firmware=0. 4-1 ip=192.168.1.70 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:24 memory:fc400000-fc41ffff ioport:f000(size=32) memory:fc420000-fc423fff

I found a similar question here, but am not sure how to solve my issue. The OP in that question had suggested that the igb driver being used could be wrong. Is that so? What can I do to troubleshoot and fix this issue?